# 3.14 Master Pi vs MathMemoAR

The clearest difference is iOS requirement: 3.14 Master Pi at 15.1 against MathMemoAR's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 3.14 Master Pi sells 5 one-off in-app purchases and MathMemoAR sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 3.14 Master Pi | MathMemoAR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 47 MB | 12 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [David Brown](https://appshunter.io/developer/1848509879) | [Frank Otto](https://appshunter.io/developer/1769347442) |

## What reviewers say

### 3.14 Master Pi

[App page](https://appshunter.io/ios/app/314-master-pi/id6754499094)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Summation Supporter | $2.99 | one-time |
| Premium (Lifetime) | $4.99 | one-time |
| Radical Patron | $9.99 | one-time |
| Infinite Supporter | $29.99 | one-time |
| Pi Master | $99.99 | one-time |


### MathMemoAR

[App page](https://appshunter.io/ios/app/mathmemoar/id6758889718)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - All Formulas | $2.99 | one-time |


## Frequently asked questions

### Is 3.14 Master Pi free?

3.14 Master Pi is free to download, with in-app purchases available.

### Is MathMemoAR free?

MathMemoAR is free to download, with in-app purchases available.

### Do 3.14 Master Pi or MathMemoAR have ads?

Neither 3.14 Master Pi nor MathMemoAR shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*